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NXP Semiconductors LPC2141FBD64,151
- Part No.:
- LPC2141FBD64,151
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
LPC2141FBD64,151.pdf
- Description:
- IC MCU 16/32BIT 32KB FLSH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
LPC2141FBD64,151 from NXP Semiconductors is a 32-bit ARM7TDMI-S microcontroller in LQFP64 package with 32 kB flash, 8 kB SRAM, USB 2.0 Full-speed device controller (2 kB endpoint RAM), single 10-bit ADC (6-channel), no DAC, and operates at up to 60 MHz - deployed in access control and point-of-sale terminals requiring compact size and low power.
For engineers reviewing the LPC2141FBD64,151 datasheet, LPC2141FBD64,151 pinout, LPC2141FBD64,151 application, or LPC2141FBD64,151 equivalent, key selection criteria include USB 2.0 Full-speed support without DMA-accessible RAM, absence of DAC, 6-channel ADC capability, 45 GPIOs with 9 interrupt-capable pins, and 3.3 V ±10 % core supply with 5 V tolerant I/O.
Technical Context
The LPC2141FBD64,151 implements an ARM7TDMI-S core with real-time emulation and embedded trace support, enabling high-fidelity debugging via EmbeddedICE RT and on-chip RealMonitor. Its 128-bit wide memory interface and accelerator architecture sustain full 60 MHz operation in 32-bit ARM mode.
It integrates dual UARTs (16C550 compatible), two Fast I²C-bus interfaces (400 kbit/s), SPI/SSP, and a Vectored Interrupt Controller (VIC) with configurable priorities - all coordinated through AMBA AHB/APB bridges. The USB 2.0 Full-speed controller includes dedicated 2 kB endpoint RAM but lacks the 8 kB USB-DMA RAM found in LPC2146/48.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S 32-bit RISC processor with Thumb instruction set support for code density optimization. |
| Max Clock Frequency | 60 MHz via on-chip PLL (100 µs settling time), enabling real-time execution of time-critical firmware. |
| Flash Memory | 32 kB on-chip flash with ISP/IAP support; 100,000 erase/write cycles and 20-year data retention. |
| SRAM | 8 kB on-chip static RAM accessible by CPU for variables, stack, and code execution. |
| ADC | Single 10-bit ADC with 6 analog inputs (AD0.0–AD0.7, excluding AD0.5); conversion time as low as 2.44 µs per channel. |
| USB Interface | USB 2.0 Full-speed (12 Mbit/s) device controller with 2 kB dedicated endpoint RAM; no DAC or USB-DMA RAM. |
| I/O & Interrupts | 45 fast GPIO lines (5 V tolerant), up to 9 edge/level-sensitive external interrupt pins (EINT0–EINT3 plus P1.25, etc.). |
Pinout & Package
Package: Plastic LQFP64 (SOT314-2), 10 × 10 × 1.4 mm, lead pitch 0.5 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/TXD0/PWM1 | UART0 transmit / PWM output | Primary serial debug interface; supports bootloader communication and motor/servo control via PWM1. |
| P0.1/RXD0/PWM3/EINT0 | UART0 receive / PWM / interrupt input | Full-duplex UART0 I/O; EINT0 enables wake-up from Power-down mode on external event. |
| P0.2/SCL0/CAP0.0 | I²C0 clock / Timer0 capture | Open-drain I²C bus clock line; CAP0.0 allows precise timing measurement of external signals. |
| P0.3/SDA0/MAT0.0/EINT1 | I²C0 data / Timer0 match / interrupt | Open-drain I²C data line; MAT0.0 generates periodic pulses; EINT1 supports second wake-up source. |
| D+/D− | USB differential pair | Compliant USB 2.0 Full-speed physical layer; requires external 1.5 kΩ pull-up on D+ via P0.31/CONNECT for SoftConnect. |
| RESET | Active-low reset input | TTL-level, 5 V tolerant; initiates cold boot and forces I/O/peripherals to default states. |
| VDD / VSS | Core power / ground | 3.3 V ±10 % supply (VDD pins 23/43/51); multiple VSS pins (6/18/25/42/50) ensure low-impedance return path. |
| VDDA / VSSA / VREF | Analog power / analog ground / ADC reference | Isolated analog domain: VDDA powers ADC/DAC; VSSA minimizes noise; VREF sets ADC full-scale range. |
Key Features
| Feature | Design Value |
|---|---|
| ARM7TDMI-S + Thumb mode | Enables 30 % higher performance vs. Thumb-only execution in critical ISR/DSP routines while reducing code footprint by >30 %. |
| In-System Programming (ISP) | Allows field firmware updates via UART0 without removing MCU from PCB - essential for deployed access control units. |
| Embedded Trace Interface | Supports real-time instruction tracing and non-intrusive debugging using JTAG and RealMonitor software. |
| USB 2.0 Full-speed device | Integrated controller eliminates external PHY; 2 kB endpoint RAM suffices for HID/class-compliant device descriptors and small bulk transfers. |
| Low-power operation | Idle and Power-down modes with wake-up via EINTx or Brown-Out Detector (BOD); RTC runs independently on VBAT. |
Applications
| Access Control Terminal | Point-of-Sale (POS) Peripheral |
|---|---|
Use Scenario: Standalone biometric reader with keypad, LED indicators, and USB connectivity to host PC. IC Role / Device Role / Timing Role: Main system controller handling fingerprint matching, secure credential storage, and USB HID report generation. Use Value: 32 kB flash stores firmware + templates; 8 kB RAM buffers sensor data; USB 2.0 enables plug-and-play integration without drivers. | Use Scenario: Compact barcode scanner module interfacing with cash register via USB. IC Role / Device Role / Timing Role: Host-side USB device controller with UART-to-USB bridge logic and GPIO-managed trigger button. Use Value: 45 GPIOs manage scan enable, status LEDs, and buzzer; 60 MHz CPU decodes barcodes in real time; low power extends battery life. |
| Industrial Protocol Converter | Medical Sensor Interface |
Use Scenario: RS-485 Modbus slave to USB gateway for legacy building automation systems. IC Role / Device Role / Timing Role: Dual-protocol translator with UART0 (RS-485) and USB device endpoints managing packet framing and address mapping. Use Value: Two UARTs handle independent serial streams; VIC prioritizes Modbus response latency; 32 kB flash holds protocol stack and configuration. | Use Scenario: Portable pulse oximeter with analog front-end and USB data upload to clinical workstation. IC Role / Device Role / Timing Role: Signal acquisition controller sampling photodiode outputs via 10-bit ADC and transmitting waveform data over USB. Use Value: 2.44 µs ADC conversion captures rapid SpO₂ transients; 6-channel ADC supports dual-wavelength sensing; USB ensures reliable data export. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2142FBD64,151 | 64 kB flash, 16 kB SRAM, adds 10-bit DAC (AOUT on P0.25), same ADC count. | Required where analog output (e.g., sensor calibration voltage, audio tone generation) is needed alongside USB/ADC. | Select when DAC functionality is mandatory and additional flash/RAM justify cost premium. |
| LPC2144FBD64,151 | 128 kB flash, 16 kB SRAM, dual 10-bit ADC (14 total channels), adds DAC, supports UART1 modem signals (RTS/CTS/DSR). | Suitable for multi-sensor hubs or soft-modem implementations needing extra analog inputs and serial handshaking. | Choose when expanding analog acquisition channels or adding modem control lines without changing PCB layout. |
Compared with LPC2141FBD64,151, the LPC2142FBD64,151 adds DAC output and doubles flash/RAM for enhanced firmware flexibility, while the LPC2144FBD64,151 further expands ADC capacity and serial control features - both retain identical LQFP64 pinout and USB/RTC/peripheral compatibility.
Availability
LPC2141FBD64,151 is available at Aetrix Electronics and suitable for access control terminals, point-of-sale peripherals, and industrial protocol converters requiring stable component supply across long-lifecycle deployments.
Supply support for LPC2141FBD64,151 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader delivering high-performance mixed-signal and RF solutions for automotive, industrial, and IoT markets.
The LPC214x family targets cost-sensitive, space-constrained embedded applications demanding integrated USB, analog peripherals, and ARM-based real-time processing - optimized for miniaturized control and connectivity devices.
FAQ
Does the LPC2141FBD64,151 support USB device enumeration without external hardware?
Yes. The LPC2141FBD64,151 integrates a full USB 2.0 Full-speed device controller with on-chip 2 kB endpoint RAM and SoftConnect capability via P0.31/CONNECT. No external PHY or pull-up resistor is required - the internal logic manages D+ line assertion under firmware control, enabling self-contained USB enumeration.
What is the maximum ADC sampling rate achievable with the LPC2141FBD64,151?
The LPC2141FBD64,151 achieves a minimum conversion time of 2.44 µs per channel, supporting up to ~409.8 kS/s aggregate sampling across its 6 ADC inputs. Actual sustained rate depends on firmware overhead and channel sequencing - typical continuous single-channel acquisition reaches 300–350 kS/s in optimized assembly routines.
Can the LPC2141FBD64,151 operate from a 5 V supply?
No. The LPC2141FBD64,151 requires a 3.3 V ±10 % core supply (VDD = 3.0–3.6 V). However, all GPIO pins are 5 V tolerant, allowing direct interface with 5 V logic peripherals without level shifters - critical for legacy industrial I/O integration.
Is there a DAC available on the LPC2141FBD64,151?
No. The LPC2141FBD64,151 does not include a DAC. DAC functionality (AOUT on P0.25) is present only in LPC2142FBD64,151 and higher variants (LPC2144/46/48). For designs requiring analog output, LPC2142FBD64,151 is the minimal upgrade retaining identical pinout and package.
How many external interrupt sources does the LPC2141FBD64,151 support?
The LPC2141FBD64,151 supports four dedicated external interrupt inputs (EINT0–EINT3) on GPIO pins, plus additional interrupt-capable pins including P1.25 (EXTIN0) and RTC alarm - totaling at least nine edge- or level-sensitive interrupt sources usable for wake-up and real-time event handling.
LPC2141FBD64,151 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- LPC2100
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 16/32-Bit
- Speed:
- 60MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, SSP, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 45
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 6x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC2141FBD64,151 FAQ
1.How can I place an order for LPC2141FBD64,151 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2141FBD64,151 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LPC2141FBD64,151 reliable?
The price and inventory of LPC2141FBD64,151 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2141FBD64,151 is usually 5 days.
3.What payment methods are accepted for LPC2141FBD64,151?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2141FBD64,151 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2141FBD64,151?
LPC2141FBD64,151 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2141FBD64,151 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LPC2141FBD64,151?
For technical support, including LPC2141FBD64,151 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2141FBD64,151 requirements.
6.How does Aetrix verify that LPC2141FBD64,151 is sourced from the original manufacturer or authorized distributors?
All LPC2141FBD64,151 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LPC2141FBD64,151 meets industry standards.
7.What is the process for return or replacement of LPC2141FBD64,151?
All LPC2141FBD64,151 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2141FBD64,151, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LPC2141FBD64,151 part is unused and in its original packaging.
Return procedure for LPC2141FBD64,151:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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